bbPress.org

bbpress and buddypress just use WordPress login, and WordPress lets plugin authors do this – only so much you can expect the WordPress authors to support. Wanguard shut down due to stress on author.

As a plugin author, I sympathise – it’s amazing how much abuse you get for providing something for free.

Plenty of solutions out there that use a variety of methods. eg

The Best Alternative For WangGuard With Scaled Protection